Re: Dunno about warming @H4rmony
Hydrogen is not a method to store energy H4rmony and I never said it was, it is a gas that burns with an almost invisible flame and has no odor.
You continually offer the use of hydrogen as a "solution" to our energy needs, when it does not work. The only method of creating enough electricity, cheaply enough to make Hydrogen is Fusion and that isn't happening anytime soon and we would be better served to use the electricity directly if it were.
It leaks easily across even solid metal, especially the kind of metal tubing that would be used in any transportation device. It is the smallest atom in the table, so small that it penetrates metal seals and metals tanks right though the grain structure. Since you mention Hydrogen Embrittlement you should know that the only metals (Monel & Hastelloy) that help prevent it are daftly expensive, hard to machine, immpossible to weld and are jokingly called "unobtanium" by those who use it.
Now where would you store H2 in an auto? A tank in the trunk most likely. Let that tank sit in the sun in a Texas parking lot all day and climb in and start the car. Since H2 requires a Class 1 Div 1 Group B, electrical rating there will not be a car in the world that will meet the explosion proof rating for Hydrogen gas and only a few dozen transport truck that could do it. Go find insurance.
At room temperature, liquid hydrogen tanks must be vented or they will explode. Otherwise they must be refrigerated at an excessive energy cost and the liquifaction temperature is -423 F. Go find a chiller system to produce that temperature. You can't afford it or the energy costs.
The Hydrogen trucks you see leaving an Air Liquide, Praxair, or Linde gas liquifaction facility all have one thing in common, a trail of leaking gas. You do not want to light a cigarette around those trucks.
If you "break" the atomic bonds of water to make H2 and O (Electrolysis), the electrical energy it takes to do so, is enormous compared to the process of combustion. It takes more energy to produce Hydrogen than you can ever get in return.
Since you OBVIOUSLY can't understand, check the following link. They (Praxair) are the experts on the subject and I have only got 24 years of industry experience and training on the selection and use of equipment for just such a Hydrogen application as electrical turbines, reduction furnaces, the control valves that direct the H2 in a chemical or power plant, the tubing that is acceptable to transport the H2 from the storage tank, the pressure relief valves that prevent the h2 from blowing up the tanks, the regulators that control the gas pressure being delivered, the analyzers that check the gas for purity (CO or CO2 contamination at less than 1 PPM in pure H2 is a difficult measurement)
As Hydrogen is not the best choice, then the only alternative gas is CNG or LNG. Both are being used as fuel right now and are far cleaner and safer than hydrocarbon liquid fuels like gasoline or kerosene.